Hi,folks
I am using QEMU to debug Linux Kernel. And a boot disk is create
through qemu-img. It can cannot be booted with other built kernel. The
process is as the following show:
create disk image like this:
qemu-img create -f raw rootdisk.img 8G
install redhat EL4 U4:
qemu -boot d -cdrom rhel4u4-disc1.img -hda rootdisk.img
during installation:
/dev/hda1 ---> /boot ext2
/dev/hda2 ----->/ ext2
/dev/hda3------> swap
after the installation, file rootdisk.img, it shows:
rootdisk.img: x86 boot sector, code offset 0x48
it can work like this:
qemu rootdisk.img
enter the system:fdisk -l, it shows that
Partition table entries are not in disk order
it also panics with other new built kernel like:
qemu -kernel bzImage -hda rootdisk.img
but the same kernel can work with the disk image down from qemu's
website:
qemu -kernel bzImage -hda linux-0.2.img
The only difference between rootdisk.img and linux-0.2.img is their
file atrributes as the following:
rootdisk.img: x86 boot sector, code offset 0x48
linux-0.2.img: x86 boot sector
pls help check the above process. I will appreciate that anyone
points the potential errors.
thank you~
best wishes,
kaiven
